Bio 1201 notes2

Bio 1201 notes2 - Chemical Reactions: occur anytime two or...

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Chemical Reactions: occur anytime two or more atoms, ions, or molecules collide in such a way that they produce a new substance. Laws of thermodynamics- o First law- energy can neither be created nor destroyed only converted from one form to another. Second law- when converting energy from one form to another the amount of useful energy decreases. Types of Chemical Reactions: o Spontaneous- can occur without outside help (energy); can happen doesn’t mean it will; often very slow o Non-spontaneous- can occur only with outside help (energy); can only occur if you add energy; fundamentally going uphill; reactions have less energy than the product Free energy- energy that is free and available to do work; gravitational motion, diffusion, & chemical reaction (all have high energy at the top, then lower energy at the bottom) o The amount of energy when/for reactions/processes occur Free energy and chemical reactions: o Spontaneous- release free energy (exergonic); reactions have greater free
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This note was uploaded on 10/03/2011 for the course BIOL 1201 taught by Professor Wishtichusen during the Fall '07 term at LSU.

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Bio 1201 notes2 - Chemical Reactions: occur anytime two or...

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